Main bearing sinkage issues and estimated repair costs for the 4 1/4 Litre model.
| Identifier | ExFiles\Box 115\3\ scan0013 | |
| Date | 3rd July 1937 | |
| - 3 - Hd {Mr Hayward / Mr Huddy} /SB {Mr Bull/Mr Bannister} 6/HR.3.7.37. Continued:- 4 1/4 LITRE MAIN BEARINGS. 10. The only trouble has been sinkage of the bearings causing roughness or a thump. Approximately 25 cars have had to be attended to, including those in France which have been done as a matter of routine. 11. We estimate that the cost to the Company for removing the crankshaft, drilling an extra hole in each crankpin, grooving the intermediate bearings, fitting a large capacity oil pump and a set of Hall's Metal big ends, would be approximately £30. Hd {Mr Hayward / Mr Huddy} /SB. {Mr Bull/Mr Bannister} | ||
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).